support before a possible presidential bid. >>> 6 million people killed nazi germany people are remembered. they opened a day of remembrance by issuing a stern warning of the world to learn lessons of the past and prevent another such tragedy. >> we continue to follow the deadly tornadoes and the threat is not over. one of the men overseeing search and rescue operations before he's joining us live. his warning for you coming up next. >> you better not get caught snapping selfies. we will explain. my name is jenny, and i quit smoking with chantix. before chantix, i tried to quit probably about five times. it was different than the other times i tried to quit. [ male announcer ] along with support, chantix varenicline is proven to help peoe quit smoking. it's a non-nicotine pill. chantix reduced my urge to smoke. that helped me quit smoking. [ male announcer ] some people had changes in behavior, thinking, or mood, hostility, agition, depressed mood, and suicidathoughts or actis while taking or after stopping chantix. if you notice any of these, stop chantix, and call your doctor right away.